try setting the port. In some cases I have found that Mail::Sender can be blocked by a hosts mail filter. My host has given me a port number that is not scanned and therefore my emails are not blocked. You may also want to try

When putting a smiley right before a closing parenthesis, do you:

Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
Reverse direction of the smiley: (Like this: (: )
Use angle/square brackets instead of parentheses
Use C-style commenting to set the smiley off from the closing parenthesis
Make the smiley a dunce: (:>
I disapprove of emoticons
Other